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System and method for providing a parameterized analog feedback loop for continuous time adaptive equalization incorporating low frequency attenuation gain compensation
System and method for providing a parameterized analog feedback loop for continuous time adaptive equalization incorporating low frequency attenuation gain compensation
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机译:用于提供参数化模拟反馈环路以进行连续时间自适应均衡并结合低频衰减增益补偿的系统和方法
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摘要
A system and a method are disclosed for providing a parameterized analog feedback loop for continuous time adaptive equalization that incorporates low frequency attenuation gain compensation. N adaptive equalizer stages are coupled in series and a slicer circuit is coupled to the last (Nth) adaptive equalizer stage. A single equalizer adaptation control loop controls the frequency response of the adaptive equalizer stages to compensate for the attenuation of a lossy channel. The single equalizer adaptation control loop also compensates for the direct current (DC) loss in the lossy channel by modulating a bias current in the slicer circuit to scale the low frequency feedback with adaptation coefficients that correlate with channel length.
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